Sahih Bukhari Volume 2, Book 24, Hadith 1486

حَدَّثَنَا عُمَرُ بْنُ مُحَمَّدِ بْنِ الْحَسَنِ الأَسَدِيُّ، حَدَّثَنَا أَبِي، حَدَّثَنَا إِبْرَاهِيمُ بْنُ طَهْمَانَ، عَنْ مُحَمَّدِ بْنِ زِيَادٍ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُؤْتَى بِالتَّمْرِ عِنْدَ صِرَامِ النَّخْلِ فَيَجِيءُ هَذَا بِتَمْرِهِ وَهَذَا مِنْ تَمْرِهِ حَتَّى يَصِيرَ عِنْدَهُ كَوْمًا مِنْ تَمْرٍ، فَجَعَلَ الْحَسَنُ وَالْحُسَيْنُ ـ رضى الله عنهما ـ يَلْعَبَانِ بِذَلِكَ التَّمْرِ، فَأَخَذَ أَحَدُهُمَا تَمْرَةً، فَجَعَلَهَا فِي فِيهِ، فَنَظَرَ إِلَيْهِ رَسُولُ اللَّهِ صلى الله عليه وسلم فَأَخْرَجَهَا مِنْ فِيهِ فَقَالَ ‏"‏ أَمَا عَلِمْتَ أَنَّ آلَ مُحَمَّدٍ صلى الله عليه وسلم لاَ يَأْكُلُونَ الصَّدَقَةَ ‏"‏‏.

Narrated By Abu Huraira : Dates used to be brought to Allah's Apostle immediately after being plucked. Different persons would bring their dates till a big heap collected (in front of the Prophet). Once Al-Hasan and Al-Husain were playing with these dates. One of them took a date and put it in his mouth. Allah's Apostle looked at him and took it out from his mouth and said, "Don't you know that Muhammad's offspring do not eat what is given in charity?"